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HYR^CODON

263

molar teeth are  strikingly like those of  the genus Rhinoceros.
The   fore-feet   are   pentadactyle,   but  functionally  tetradactyie;

the  hind-feet  tridactyle.      The   ulna  is  less   reduced  than  in
Hyracodon, and the dorso-hirnbar vertebrae are twenty-five.
Amvnodonts were  short, heavy   types, probably marsh-